Merge pull request #19161 from thaJeztah/remove_1.10_migration

engine: remove docker 1.10 migration guide

content/engine/_index.md

@@ -42,6 +42,7 @@ grid:
 aliases:
 - /edge/
 - /engine/ce-ee-node-activate/
+- /engine/migration/
 - /engine/misc/
 - /linux/
 ---

content/engine/migration.md

@@ -1,77 +0,0 @@
----
-description: Migrate to Engine 1.10
-keywords: docker, documentation, engine, upgrade, migration
-title: Migrate to Engine 1.10
----
-
-Starting from version 1.10 of Docker Engine, we completely change the way image
-data is addressed on disk. Previously, every image and layer used a randomly
-assigned UUID. In 1.10 we implemented a content addressable method using an ID,
-based on a secure hash of the image and layer data.
-
-The new method gives users more security, provides a built-in way to avoid ID
-collisions and guarantee data integrity after pull, push, load, or save. It also
-brings better sharing of layers by allowing many images to freely share their
-layers even if they didn’t come from the same build.
-
-Addressing images by their content also lets us more easily detect if something
-has already been downloaded. Because we have separated images and layers, you
-don’t need to pull the configurations for every image that was part of the
-original build chain. We also don’t need to create layers for the build
-instructions that didn’t modify the filesystem.
-
-Content addressability is the foundation for the new distribution features. The
-image pull and push code has been reworked to use a download/upload manager
-concept that makes pushing and pulling images much more stable and mitigates any
-parallel request issues. The download manager also brings retries on failed
-downloads and better prioritization for concurrent downloads.
-
-We are also introducing a new manifest format that is built on top of the
-content addressable base. It directly references the content addressable image
-configuration and layer checksums. The new manifest format also makes it
-possible for a manifest list to be used for targeting multiple
-architectures/platforms. Moving to the new manifest format is completely
-transparent.
-
-## Prepare for upgrade
-
-To make your current images accessible to the new model we need to migrate them
-to content addressable storage. This means calculating the secure checksums for
-your current data.
-
-All your current images, tags, and containers are automatically migrated to the
-new foundation the first time you start Docker Engine 1.10. Before loading your
-container, the daemon calculates all needed checksums for your current data,
-and after it has completed, all your images and tags have brand new secure
-IDs.
-
-**While this is simple operation, calculating SHA256 checksums for your files
-can take time if you have lots of image data.** On average you should assume
-that migrator can process data at a speed of 100MB/s. During this time your
-Docker daemon won’t be ready to respond to requests.
-
-## Minimize migration time
-
-If you can accept this one time hit, then upgrading Docker Engine and restarting
-the daemon transparently migrates your images. However, if you want to
-minimize the daemon’s downtime, a migration utility can be run while your old
-daemon is still running.
-
-This tool finds all your current images and calculate the checksums for
-them. After you upgrade and restart the daemon, the checksum data of the
-migrated images already exist, freeing the daemon from that computation
-work. If new images appeared between the migration and the upgrade, those are
-processed at time of upgrade to 1.10.
-
-[You can download the migration tool
-here.](https://github.com/docker/v1.10-migrator/releases)
-
-The migration tool can also be run as a Docker image. While running the migrator
-image you need to expose your Docker data directory to the container. If you use
-the default path then you would run:
-
-    $ docker run --rm -v /var/lib/docker:/var/lib/docker docker/v1.10-migrator
-
-If you use the
-devicemapper storage driver, you also need to pass the flag `--privileged` to
-give the tool access to your storage devices.